Nut and bolt lock.



Patented July 4, I899.

A. BARR.

NUT AND BOLT LOCK.

(Application filed pr 7. 1899 a) M I llll ll @No Model.)

WITNESSES.

A TTORNEYS *UN T D STATES PATENT OFF-ICE.

ADDISON BARR, OF MARTINS FERRY, OHIO, ASSIGNOR OF ONE=IIALF TO WILLIAM MANN, MADDISON ALDRIDGE, AND PATRICK MOORE, OF

SAME PLACE.

NUT ND; BoLT LooK.

SPECIFICATION forming part of Lasers mat :No. 628,297,dated July 4, 1899.

Application filed April '7, Serial No. 712,110. (No model.)

To all whom, it may concern a Be it known that I, ADDISONBARR, residing at Martins Ferry, in the county of Belmont and State of Ohio, have invented anew and Improved Lock-Bolt, of which the follow-j ing is a specification.

This invention, which relates generally to the class of bolt and nutlocks, is more particularly in the nature of "a novel construction of lock-bolt which is self-securiii g in its action and in which the use of washer-plates, springdetents, and other similar devices that are common to the ordinary forms of nut-locks to keep the nuts from loosening is dispensed with. Primarily this invention seeksto provide a very simple and inexpensive lock -bolt of such character that the same can be easily applied atall places where the ordinary lockbolt and nut can be used and'with but little change in construction of the fish or tie plates.

This invention also comprises, in a. lockbolt, a new devicejand novelg'arr'angeinent of the bolt, the nut, and the fish-plates whereby the bolt is made secure and the nut kept from being loosened by the'ordinary jarring or vibration of the rail or other parts held secure thereby, the necessity of an extremely tight adjusting of the parts being avoided to effect a proper securing of the rails or other parts to be made fast.

The invention consists vertical section on the line 3 3 of Fig. 1. Fig.

4 is a similar view taken practically on the line 4 4 of Fig. 1. Fig. 5 is adetail viewfof the bolt detached, and Fig. 6 is a detail view of a modified form of my invention.

In the accompanying drawingslhave s hown my invention as applied for use as a rail-joint lock-bolt, and when thus applied the bolt and nut are used in connection with a pair of fishin the peculiar and novel construction of the bolt or nut and' ja tie-plate such as will hereinafter be described Fig. 3 is a :plates; but I desire it understood that my invention' is not necessarily limited to the use @of .two fish-plates, as the same may embody vin its'complete construction but one fish-plate, 'as'illustrated in Fig. (iand hereinafter more fully described.

Referring now tothe accompanying drawthe 'rail, and 2 2 indicate a pair of fish-plates which in their general construction may be of the ordinary kind and have face portions to extend over the foot or bottom members of the rail, as clearly shown in Fig. 1. The web of the rail has the usual apertures 1, of a somewhat largerdiameterthan the bolt, to provide for expansion and contraction of the rails and ,alsoto permit the bolt to have a slight gyratory play therein. The tie or fish plate 2 has its bolt-aperture made elongated, (see Fig. 4,) whereby to form seats forthe lateral extensions 5?,forming a'partof thenut 5, the purpose of which isitohold the nut from turning during the operation of forcing the bolt to its clamping or screwed-home position.

The bolt 6 is of the ordinary construction and has the usual heads 6 and the threaded ends 6", it being at a point justinside of its head provided with a lateral enlarged portion, elliptical shape in cross section-,wliereby the two opposing bearing-lugs 7 are provided.

The fish-plate 2, which forms a necessarypart of my complete invention, has itsbolt- "aperture 8 made of a triangular shape, whereby to provide three 'equis'p'aced bearing-faces .82 which at their merging points are'in the nature of fillets 8?," having the curvatures of the outer or bearingledge's' of thelngs 7.

ings, in which like letters and numerals represent like parts in all the figures,- 1 indicates- The sizebf the aperture S'Vis' such relatively to the elliptical shape of 'the bolt that the bolt member during one complete revolution will pass over three distinct locking positions,

. (indicated byX, Y, and Z in Fig. 3,) and each of'which shows one of thelug's 7 seated in the fillet 8 of the opening 8 and the other. lug held tightly against: the diametricallyoppositely disposed bearing-faces'S. From the foregoing, taken in connection with the accompanyin gdrawin gs, it will read ily appear that as the greatest distance crosswise of any part of the triangular holes of the fish-plate 2 just equals theextreme length of the cross-sectional line of the elliptical part of the bolt said bolt will turn in the holes; but to do so it must have a gyratory action and shift its position at least three times during one revolution, and as it must rise and fall during its rotation it is manifest that Without exterior force the bolt cannot turn, as it is not only held from rotation by the elliptical parts wedging on the triangular openings, but for the reason that the rising and falling of the bolt, particularly when it is driven to its home position, will tend to cause the threaded end of the said bolt to bind in the nut-threads. In Fig. 6 I have illustrated how the bolt can be used without the nut. In this case the solid part X, to which it is desired to hold fastthe part Y, has a threaded socket X. My invention is extremely simple, and as'it requires no spring-Washers to hold the nut it can be manufactured at a cost not more than that of the simplest form of bolt and 1 claim, and desire to secure by Letters Patent, is

1. The combination of the bolt having a threaded end to engage a fixedly-held threaded socket, said bolt having lateral lugs; of a washer or clamp plate having its bolt-aperture formed with triangularly-disposed sides to be engaged by the bolt-lugs and adapted to impart a gyratory movement to the bolt as it is rotated, for the purposes described.

2. The combination with the washer-plate. 2, having a nut-receiving aperture; the nut having a means for fixedly seating in the aperture of the Washer-plate 2; a second Washerplate 2, having triangularly-shaped bolt-apertures, and the bolt having a threaded end to engage the nut and having an elliptical enlargement at or near its head, forming equilaterally-projeeted bearing-lugs, all being arranged substantially as shown and for the purposes described.

ADDISON BARR.

lVitnesses:

Gno. G. SnnGWIcK,

LUCY M. SnnoWIcK. 

